mountd.c revision 2999
11558Srgrimes/* 21558Srgrimes * Copyright (c) 1989, 1993 31558Srgrimes * The Regents of the University of California. All rights reserved. 41558Srgrimes * 51558Srgrimes * This code is derived from software contributed to Berkeley by 61558Srgrimes * Herb Hasler and Rick Macklem at The University of Guelph. 71558Srgrimes * 81558Srgrimes * Redistribution and use in source and binary forms, with or without 91558Srgrimes * modification, are permitted provided that the following conditions 101558Srgrimes * are met: 111558Srgrimes * 1. Redistributions of source code must retain the above copyright 121558Srgrimes * notice, this list of conditions and the following disclaimer. 131558Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 141558Srgrimes * notice, this list of conditions and the following disclaimer in the 151558Srgrimes * documentation and/or other materials provided with the distribution. 161558Srgrimes * 3. All advertising materials mentioning features or use of this software 171558Srgrimes * must display the following acknowledgement: 181558Srgrimes * This product includes software developed by the University of 191558Srgrimes * California, Berkeley and its contributors. 201558Srgrimes * 4. Neither the name of the University nor the names of its contributors 211558Srgrimes * may be used to endorse or promote products derived from this software 221558Srgrimes * without specific prior written permission. 231558Srgrimes * 241558Srgrimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 251558Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 261558Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 271558Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 281558Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 291558Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 301558Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 311558Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 321558Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 331558Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 341558Srgrimes * SUCH DAMAGE. 351558Srgrimes */ 361558Srgrimes 371558Srgrimes#ifndef lint 381558Srgrimesstatic char copyright[] = 391558Srgrimes"@(#) Copyright (c) 1989, 1993\n\ 401558Srgrimes The Regents of the University of California. All rights reserved.\n"; 412999Swollman#endif /*not lint*/ 421558Srgrimes 431558Srgrimes#ifndef lint 442999Swollman/*static char sccsid[] = "From: @(#)mountd.c 8.8 (Berkeley) 2/20/94";*/ 452999Swollmanstatic const char rcsid[] = 462999Swollman "$Id$"; 472999Swollman#endif /*not lint*/ 481558Srgrimes 491558Srgrimes#include <sys/param.h> 501558Srgrimes#include <sys/file.h> 511558Srgrimes#include <sys/ioctl.h> 521558Srgrimes#include <sys/mount.h> 531558Srgrimes#include <sys/socket.h> 541558Srgrimes#include <sys/stat.h> 551558Srgrimes#include <sys/syslog.h> 561558Srgrimes#include <sys/ucred.h> 571558Srgrimes 581558Srgrimes#include <rpc/rpc.h> 591558Srgrimes#include <rpc/pmap_clnt.h> 601558Srgrimes#include <rpc/pmap_prot.h> 611558Srgrimes#ifdef ISO 621558Srgrimes#include <netiso/iso.h> 631558Srgrimes#endif 641558Srgrimes#include <nfs/rpcv2.h> 651558Srgrimes#include <nfs/nfsv2.h> 661558Srgrimes 671558Srgrimes#include <arpa/inet.h> 681558Srgrimes 691558Srgrimes#include <ctype.h> 701558Srgrimes#include <errno.h> 711558Srgrimes#include <grp.h> 721558Srgrimes#include <netdb.h> 731558Srgrimes#include <pwd.h> 741558Srgrimes#include <signal.h> 751558Srgrimes#include <stdio.h> 761558Srgrimes#include <stdlib.h> 771558Srgrimes#include <string.h> 781558Srgrimes#include <unistd.h> 791558Srgrimes#include "pathnames.h" 801558Srgrimes 811558Srgrimes#ifdef DEBUG 821558Srgrimes#include <stdarg.h> 831558Srgrimes#endif 841558Srgrimes 851558Srgrimes/* 861558Srgrimes * Structures for keeping the mount list and export list 871558Srgrimes */ 881558Srgrimesstruct mountlist { 891558Srgrimes struct mountlist *ml_next; 901558Srgrimes char ml_host[RPCMNT_NAMELEN+1]; 911558Srgrimes char ml_dirp[RPCMNT_PATHLEN+1]; 921558Srgrimes}; 931558Srgrimes 941558Srgrimesstruct dirlist { 951558Srgrimes struct dirlist *dp_left; 961558Srgrimes struct dirlist *dp_right; 971558Srgrimes int dp_flag; 981558Srgrimes struct hostlist *dp_hosts; /* List of hosts this dir exported to */ 991558Srgrimes char dp_dirp[1]; /* Actually malloc'd to size of dir */ 1001558Srgrimes}; 1011558Srgrimes/* dp_flag bits */ 1021558Srgrimes#define DP_DEFSET 0x1 1031558Srgrimes 1041558Srgrimesstruct exportlist { 1051558Srgrimes struct exportlist *ex_next; 1061558Srgrimes struct dirlist *ex_dirl; 1071558Srgrimes struct dirlist *ex_defdir; 1081558Srgrimes int ex_flag; 1091558Srgrimes fsid_t ex_fs; 1101558Srgrimes char *ex_fsdir; 1111558Srgrimes}; 1121558Srgrimes/* ex_flag bits */ 1131558Srgrimes#define EX_LINKED 0x1 1141558Srgrimes 1151558Srgrimesstruct netmsk { 1161558Srgrimes u_long nt_net; 1171558Srgrimes u_long nt_mask; 1181558Srgrimes char *nt_name; 1191558Srgrimes}; 1201558Srgrimes 1211558Srgrimesunion grouptypes { 1221558Srgrimes struct hostent *gt_hostent; 1231558Srgrimes struct netmsk gt_net; 1241558Srgrimes#ifdef ISO 1251558Srgrimes struct sockaddr_iso *gt_isoaddr; 1261558Srgrimes#endif 1271558Srgrimes}; 1281558Srgrimes 1291558Srgrimesstruct grouplist { 1301558Srgrimes int gr_type; 1311558Srgrimes union grouptypes gr_ptr; 1321558Srgrimes struct grouplist *gr_next; 1331558Srgrimes}; 1341558Srgrimes/* Group types */ 1351558Srgrimes#define GT_NULL 0x0 1361558Srgrimes#define GT_HOST 0x1 1371558Srgrimes#define GT_NET 0x2 1381558Srgrimes#define GT_ISO 0x4 1391558Srgrimes 1401558Srgrimesstruct hostlist { 1411558Srgrimes struct grouplist *ht_grp; 1421558Srgrimes struct hostlist *ht_next; 1431558Srgrimes}; 1441558Srgrimes 1451558Srgrimes/* Global defs */ 1461558Srgrimeschar *add_expdir __P((struct dirlist **, char *, int)); 1471558Srgrimesvoid add_dlist __P((struct dirlist **, struct dirlist *, 1481558Srgrimes struct grouplist *)); 1491558Srgrimesvoid add_mlist __P((char *, char *)); 1501558Srgrimesint check_dirpath __P((char *)); 1511558Srgrimesint check_options __P((struct dirlist *)); 1521558Srgrimesint chk_host __P((struct dirlist *, u_long, int *)); 1531558Srgrimesvoid del_mlist __P((char *, char *)); 1541558Srgrimesstruct dirlist *dirp_search __P((struct dirlist *, char *)); 1551558Srgrimesint do_mount __P((struct exportlist *, struct grouplist *, int, 1561558Srgrimes struct ucred *, char *, int, struct statfs *)); 1571558Srgrimesint do_opt __P((char **, char **, struct exportlist *, struct grouplist *, 1581558Srgrimes int *, int *, struct ucred *)); 1591558Srgrimesstruct exportlist *ex_search __P((fsid_t *)); 1601558Srgrimesstruct exportlist *get_exp __P((void)); 1611558Srgrimesvoid free_dir __P((struct dirlist *)); 1621558Srgrimesvoid free_exp __P((struct exportlist *)); 1631558Srgrimesvoid free_grp __P((struct grouplist *)); 1641558Srgrimesvoid free_host __P((struct hostlist *)); 1651558Srgrimesvoid get_exportlist __P((void)); 1661558Srgrimesint get_host __P((char *, struct grouplist *)); 1671558Srgrimesstruct hostlist *get_ht __P((void)); 1681558Srgrimesint get_line __P((void)); 1691558Srgrimesvoid get_mountlist __P((void)); 1701558Srgrimesint get_net __P((char *, struct netmsk *, int)); 1711558Srgrimesvoid getexp_err __P((struct exportlist *, struct grouplist *)); 1721558Srgrimesstruct grouplist *get_grp __P((void)); 1731558Srgrimesvoid hang_dirp __P((struct dirlist *, struct grouplist *, 1741558Srgrimes struct exportlist *, int)); 1751558Srgrimesvoid mntsrv __P((struct svc_req *, SVCXPRT *)); 1761558Srgrimesvoid nextfield __P((char **, char **)); 1771558Srgrimesvoid out_of_mem __P((void)); 1781558Srgrimesvoid parsecred __P((char *, struct ucred *)); 1791558Srgrimesint put_exlist __P((struct dirlist *, XDR *, struct dirlist *, int *)); 1801558Srgrimesint scan_tree __P((struct dirlist *, u_long)); 1811558Srgrimesvoid send_umntall __P((void)); 1821558Srgrimesint umntall_each __P((caddr_t, struct sockaddr_in *)); 1831558Srgrimesint xdr_dir __P((XDR *, char *)); 1841558Srgrimesint xdr_explist __P((XDR *, caddr_t)); 1851558Srgrimesint xdr_fhs __P((XDR *, nfsv2fh_t *)); 1861558Srgrimesint xdr_mlist __P((XDR *, caddr_t)); 1871558Srgrimes 1881558Srgrimes/* C library */ 1891558Srgrimesint getnetgrent(); 1901558Srgrimesvoid endnetgrent(); 1911558Srgrimesvoid setnetgrent(); 1921558Srgrimes 1931558Srgrimes#ifdef ISO 1941558Srgrimesstruct iso_addr *iso_addr(); 1951558Srgrimes#endif 1961558Srgrimes 1971558Srgrimesstruct exportlist *exphead; 1981558Srgrimesstruct mountlist *mlhead; 1991558Srgrimesstruct grouplist *grphead; 2001558Srgrimeschar exname[MAXPATHLEN]; 2011558Srgrimesstruct ucred def_anon = { 2021558Srgrimes 1, 2031558Srgrimes (uid_t) -2, 2041558Srgrimes 1, 2051558Srgrimes { (gid_t) -2 } 2061558Srgrimes}; 2071558Srgrimesint root_only = 1; 2081558Srgrimesint opt_flags; 2091558Srgrimes/* Bits for above */ 2101558Srgrimes#define OP_MAPROOT 0x01 2111558Srgrimes#define OP_MAPALL 0x02 2121558Srgrimes#define OP_KERB 0x04 2131558Srgrimes#define OP_MASK 0x08 2141558Srgrimes#define OP_NET 0x10 2151558Srgrimes#define OP_ISO 0x20 2161558Srgrimes#define OP_ALLDIRS 0x40 2171558Srgrimes 2181558Srgrimes#ifdef DEBUG 2191558Srgrimesint debug = 1; 2201558Srgrimesvoid SYSLOG __P((int, const char *, ...)); 2211558Srgrimes#define syslog SYSLOG 2221558Srgrimes#else 2231558Srgrimesint debug = 0; 2241558Srgrimes#endif 2251558Srgrimes 2261558Srgrimes/* 2271558Srgrimes * Mountd server for NFS mount protocol as described in: 2281558Srgrimes * NFS: Network File System Protocol Specification, RFC1094, Appendix A 2291558Srgrimes * The optional arguments are the exports file name 2301558Srgrimes * default: _PATH_EXPORTS 2311558Srgrimes * and "-n" to allow nonroot mount. 2321558Srgrimes */ 2331558Srgrimesint 2341558Srgrimesmain(argc, argv) 2351558Srgrimes int argc; 2361558Srgrimes char **argv; 2371558Srgrimes{ 2381558Srgrimes SVCXPRT *transp; 2391558Srgrimes int c; 2402999Swollman struct vfsconf *vfc; 2411558Srgrimes 2422999Swollman vfc = getvfsbyname("nfs"); 2432999Swollman if(!vfc && vfsisloadable("nfs")) { 2442999Swollman if(vfsload("nfs")) 2452999Swollman err(1, "vfsload(nfs)"); 2462999Swollman endvfsent(); /* flush cache */ 2472999Swollman vfc = getvfsbyname("nfs"); 2482999Swollman } 2492999Swollman if(!vfc) { 2502999Swollman errx(1, "NFS support is not available in the running kernel"); 2512999Swollman } 2522999Swollman 2531558Srgrimes while ((c = getopt(argc, argv, "n")) != EOF) 2541558Srgrimes switch (c) { 2551558Srgrimes case 'n': 2561558Srgrimes root_only = 0; 2571558Srgrimes break; 2581558Srgrimes default: 2591558Srgrimes fprintf(stderr, "Usage: mountd [-n] [export_file]\n"); 2601558Srgrimes exit(1); 2611558Srgrimes }; 2621558Srgrimes argc -= optind; 2631558Srgrimes argv += optind; 2641558Srgrimes grphead = (struct grouplist *)NULL; 2651558Srgrimes exphead = (struct exportlist *)NULL; 2661558Srgrimes mlhead = (struct mountlist *)NULL; 2671558Srgrimes if (argc == 1) { 2681558Srgrimes strncpy(exname, *argv, MAXPATHLEN-1); 2691558Srgrimes exname[MAXPATHLEN-1] = '\0'; 2701558Srgrimes } else 2711558Srgrimes strcpy(exname, _PATH_EXPORTS); 2721558Srgrimes openlog("mountd", LOG_PID, LOG_DAEMON); 2731558Srgrimes if (debug) 2741558Srgrimes fprintf(stderr,"Getting export list.\n"); 2751558Srgrimes get_exportlist(); 2761558Srgrimes if (debug) 2771558Srgrimes fprintf(stderr,"Getting mount list.\n"); 2781558Srgrimes get_mountlist(); 2791558Srgrimes if (debug) 2801558Srgrimes fprintf(stderr,"Here we go.\n"); 2811558Srgrimes if (debug == 0) { 2821558Srgrimes daemon(0, 0); 2831558Srgrimes signal(SIGINT, SIG_IGN); 2841558Srgrimes signal(SIGQUIT, SIG_IGN); 2851558Srgrimes } 2861558Srgrimes signal(SIGHUP, (void (*) __P((int))) get_exportlist); 2871558Srgrimes signal(SIGTERM, (void (*) __P((int))) send_umntall); 2881558Srgrimes { FILE *pidfile = fopen(_PATH_MOUNTDPID, "w"); 2891558Srgrimes if (pidfile != NULL) { 2901558Srgrimes fprintf(pidfile, "%d\n", getpid()); 2911558Srgrimes fclose(pidfile); 2921558Srgrimes } 2931558Srgrimes } 2941558Srgrimes if ((transp = svcudp_create(RPC_ANYSOCK)) == NULL) { 2951558Srgrimes syslog(LOG_ERR, "Can't create socket"); 2961558Srgrimes exit(1); 2971558Srgrimes } 2981558Srgrimes pmap_unset(RPCPROG_MNT, RPCMNT_VER1); 2991558Srgrimes if (!svc_register(transp, RPCPROG_MNT, RPCMNT_VER1, mntsrv, 3001558Srgrimes IPPROTO_UDP)) { 3011558Srgrimes syslog(LOG_ERR, "Can't register mount"); 3021558Srgrimes exit(1); 3031558Srgrimes } 3041558Srgrimes svc_run(); 3051558Srgrimes syslog(LOG_ERR, "Mountd died"); 3061558Srgrimes exit(1); 3071558Srgrimes} 3081558Srgrimes 3091558Srgrimes/* 3101558Srgrimes * The mount rpc service 3111558Srgrimes */ 3121558Srgrimesvoid 3131558Srgrimesmntsrv(rqstp, transp) 3141558Srgrimes struct svc_req *rqstp; 3151558Srgrimes SVCXPRT *transp; 3161558Srgrimes{ 3171558Srgrimes struct exportlist *ep; 3181558Srgrimes struct dirlist *dp; 3191558Srgrimes nfsv2fh_t nfh; 3201558Srgrimes struct authunix_parms *ucr; 3211558Srgrimes struct stat stb; 3221558Srgrimes struct statfs fsb; 3231558Srgrimes struct hostent *hp; 3241558Srgrimes u_long saddr; 3251558Srgrimes char rpcpath[RPCMNT_PATHLEN+1], dirpath[MAXPATHLEN]; 3261558Srgrimes int bad = ENOENT, omask, defset; 3271558Srgrimes uid_t uid = -2; 3281558Srgrimes 3291558Srgrimes /* Get authorization */ 3301558Srgrimes switch (rqstp->rq_cred.oa_flavor) { 3311558Srgrimes case AUTH_UNIX: 3321558Srgrimes ucr = (struct authunix_parms *)rqstp->rq_clntcred; 3331558Srgrimes uid = ucr->aup_uid; 3341558Srgrimes break; 3351558Srgrimes case AUTH_NULL: 3361558Srgrimes default: 3371558Srgrimes break; 3381558Srgrimes } 3391558Srgrimes 3401558Srgrimes saddr = transp->xp_raddr.sin_addr.s_addr; 3411558Srgrimes hp = (struct hostent *)NULL; 3421558Srgrimes switch (rqstp->rq_proc) { 3431558Srgrimes case NULLPROC: 3441558Srgrimes if (!svc_sendreply(transp, xdr_void, (caddr_t)NULL)) 3451558Srgrimes syslog(LOG_ERR, "Can't send reply"); 3461558Srgrimes return; 3471558Srgrimes case RPCMNT_MOUNT: 3481558Srgrimes if ((uid != 0 && root_only) || uid == -2) { 3491558Srgrimes svcerr_weakauth(transp); 3501558Srgrimes return; 3511558Srgrimes } 3521558Srgrimes if (!svc_getargs(transp, xdr_dir, rpcpath)) { 3531558Srgrimes svcerr_decode(transp); 3541558Srgrimes return; 3551558Srgrimes } 3561558Srgrimes 3571558Srgrimes /* 3581558Srgrimes * Get the real pathname and make sure it is a directory 3591558Srgrimes * that exists. 3601558Srgrimes */ 3611558Srgrimes if (realpath(rpcpath, dirpath) == 0 || 3621558Srgrimes stat(dirpath, &stb) < 0 || 3631558Srgrimes (stb.st_mode & S_IFMT) != S_IFDIR || 3641558Srgrimes statfs(dirpath, &fsb) < 0) { 3651558Srgrimes chdir("/"); /* Just in case realpath doesn't */ 3661558Srgrimes if (debug) 3671558Srgrimes fprintf(stderr, "stat failed on %s\n", dirpath); 3681558Srgrimes if (!svc_sendreply(transp, xdr_long, (caddr_t)&bad)) 3691558Srgrimes syslog(LOG_ERR, "Can't send reply"); 3701558Srgrimes return; 3711558Srgrimes } 3721558Srgrimes 3731558Srgrimes /* Check in the exports list */ 3741558Srgrimes omask = sigblock(sigmask(SIGHUP)); 3751558Srgrimes ep = ex_search(&fsb.f_fsid); 3761558Srgrimes defset = 0; 3771558Srgrimes if (ep && (chk_host(ep->ex_defdir, saddr, &defset) || 3781558Srgrimes ((dp = dirp_search(ep->ex_dirl, dirpath)) && 3791558Srgrimes chk_host(dp, saddr, &defset)) || 3801558Srgrimes (defset && scan_tree(ep->ex_defdir, saddr) == 0 && 3811558Srgrimes scan_tree(ep->ex_dirl, saddr) == 0))) { 3821558Srgrimes /* Get the file handle */ 3831558Srgrimes bzero((caddr_t)&nfh, sizeof(nfh)); 3841558Srgrimes if (getfh(dirpath, (fhandle_t *)&nfh) < 0) { 3851558Srgrimes bad = errno; 3861558Srgrimes syslog(LOG_ERR, "Can't get fh for %s", dirpath); 3871558Srgrimes if (!svc_sendreply(transp, xdr_long, 3881558Srgrimes (caddr_t)&bad)) 3891558Srgrimes syslog(LOG_ERR, "Can't send reply"); 3901558Srgrimes sigsetmask(omask); 3911558Srgrimes return; 3921558Srgrimes } 3931558Srgrimes if (!svc_sendreply(transp, xdr_fhs, (caddr_t)&nfh)) 3941558Srgrimes syslog(LOG_ERR, "Can't send reply"); 3951558Srgrimes if (hp == NULL) 3961558Srgrimes hp = gethostbyaddr((caddr_t)&saddr, 3971558Srgrimes sizeof(saddr), AF_INET); 3981558Srgrimes if (hp) 3991558Srgrimes add_mlist(hp->h_name, dirpath); 4001558Srgrimes else 4011558Srgrimes add_mlist(inet_ntoa(transp->xp_raddr.sin_addr), 4021558Srgrimes dirpath); 4031558Srgrimes if (debug) 4041558Srgrimes fprintf(stderr,"Mount successfull.\n"); 4051558Srgrimes } else { 4061558Srgrimes bad = EACCES; 4071558Srgrimes if (!svc_sendreply(transp, xdr_long, (caddr_t)&bad)) 4081558Srgrimes syslog(LOG_ERR, "Can't send reply"); 4091558Srgrimes } 4101558Srgrimes sigsetmask(omask); 4111558Srgrimes return; 4121558Srgrimes case RPCMNT_DUMP: 4131558Srgrimes if (!svc_sendreply(transp, xdr_mlist, (caddr_t)NULL)) 4141558Srgrimes syslog(LOG_ERR, "Can't send reply"); 4151558Srgrimes return; 4161558Srgrimes case RPCMNT_UMOUNT: 4171558Srgrimes if ((uid != 0 && root_only) || uid == -2) { 4181558Srgrimes svcerr_weakauth(transp); 4191558Srgrimes return; 4201558Srgrimes } 4211558Srgrimes if (!svc_getargs(transp, xdr_dir, dirpath)) { 4221558Srgrimes svcerr_decode(transp); 4231558Srgrimes return; 4241558Srgrimes } 4251558Srgrimes if (!svc_sendreply(transp, xdr_void, (caddr_t)NULL)) 4261558Srgrimes syslog(LOG_ERR, "Can't send reply"); 4271558Srgrimes hp = gethostbyaddr((caddr_t)&saddr, sizeof(saddr), AF_INET); 4281558Srgrimes if (hp) 4291558Srgrimes del_mlist(hp->h_name, dirpath); 4301558Srgrimes del_mlist(inet_ntoa(transp->xp_raddr.sin_addr), dirpath); 4311558Srgrimes return; 4321558Srgrimes case RPCMNT_UMNTALL: 4331558Srgrimes if ((uid != 0 && root_only) || uid == -2) { 4341558Srgrimes svcerr_weakauth(transp); 4351558Srgrimes return; 4361558Srgrimes } 4371558Srgrimes if (!svc_sendreply(transp, xdr_void, (caddr_t)NULL)) 4381558Srgrimes syslog(LOG_ERR, "Can't send reply"); 4391558Srgrimes hp = gethostbyaddr((caddr_t)&saddr, sizeof(saddr), AF_INET); 4401558Srgrimes if (hp) 4411558Srgrimes del_mlist(hp->h_name, (char *)NULL); 4421558Srgrimes del_mlist(inet_ntoa(transp->xp_raddr.sin_addr), (char *)NULL); 4431558Srgrimes return; 4441558Srgrimes case RPCMNT_EXPORT: 4451558Srgrimes if (!svc_sendreply(transp, xdr_explist, (caddr_t)NULL)) 4461558Srgrimes syslog(LOG_ERR, "Can't send reply"); 4471558Srgrimes return; 4481558Srgrimes default: 4491558Srgrimes svcerr_noproc(transp); 4501558Srgrimes return; 4511558Srgrimes } 4521558Srgrimes} 4531558Srgrimes 4541558Srgrimes/* 4551558Srgrimes * Xdr conversion for a dirpath string 4561558Srgrimes */ 4571558Srgrimesint 4581558Srgrimesxdr_dir(xdrsp, dirp) 4591558Srgrimes XDR *xdrsp; 4601558Srgrimes char *dirp; 4611558Srgrimes{ 4621558Srgrimes return (xdr_string(xdrsp, &dirp, RPCMNT_PATHLEN)); 4631558Srgrimes} 4641558Srgrimes 4651558Srgrimes/* 4661558Srgrimes * Xdr routine to generate fhstatus 4671558Srgrimes */ 4681558Srgrimesint 4691558Srgrimesxdr_fhs(xdrsp, nfh) 4701558Srgrimes XDR *xdrsp; 4711558Srgrimes nfsv2fh_t *nfh; 4721558Srgrimes{ 4731558Srgrimes int ok = 0; 4741558Srgrimes 4751558Srgrimes if (!xdr_long(xdrsp, &ok)) 4761558Srgrimes return (0); 4771558Srgrimes return (xdr_opaque(xdrsp, (caddr_t)nfh, NFSX_FH)); 4781558Srgrimes} 4791558Srgrimes 4801558Srgrimesint 4811558Srgrimesxdr_mlist(xdrsp, cp) 4821558Srgrimes XDR *xdrsp; 4831558Srgrimes caddr_t cp; 4841558Srgrimes{ 4851558Srgrimes struct mountlist *mlp; 4861558Srgrimes int true = 1; 4871558Srgrimes int false = 0; 4881558Srgrimes char *strp; 4891558Srgrimes 4901558Srgrimes mlp = mlhead; 4911558Srgrimes while (mlp) { 4921558Srgrimes if (!xdr_bool(xdrsp, &true)) 4931558Srgrimes return (0); 4941558Srgrimes strp = &mlp->ml_host[0]; 4951558Srgrimes if (!xdr_string(xdrsp, &strp, RPCMNT_NAMELEN)) 4961558Srgrimes return (0); 4971558Srgrimes strp = &mlp->ml_dirp[0]; 4981558Srgrimes if (!xdr_string(xdrsp, &strp, RPCMNT_PATHLEN)) 4991558Srgrimes return (0); 5001558Srgrimes mlp = mlp->ml_next; 5011558Srgrimes } 5021558Srgrimes if (!xdr_bool(xdrsp, &false)) 5031558Srgrimes return (0); 5041558Srgrimes return (1); 5051558Srgrimes} 5061558Srgrimes 5071558Srgrimes/* 5081558Srgrimes * Xdr conversion for export list 5091558Srgrimes */ 5101558Srgrimesint 5111558Srgrimesxdr_explist(xdrsp, cp) 5121558Srgrimes XDR *xdrsp; 5131558Srgrimes caddr_t cp; 5141558Srgrimes{ 5151558Srgrimes struct exportlist *ep; 5161558Srgrimes int false = 0; 5171558Srgrimes int omask, putdef; 5181558Srgrimes 5191558Srgrimes omask = sigblock(sigmask(SIGHUP)); 5201558Srgrimes ep = exphead; 5211558Srgrimes while (ep) { 5221558Srgrimes putdef = 0; 5231558Srgrimes if (put_exlist(ep->ex_dirl, xdrsp, ep->ex_defdir, &putdef)) 5241558Srgrimes goto errout; 5251558Srgrimes if (ep->ex_defdir && putdef == 0 && 5261558Srgrimes put_exlist(ep->ex_defdir, xdrsp, (struct dirlist *)NULL, 5271558Srgrimes &putdef)) 5281558Srgrimes goto errout; 5291558Srgrimes ep = ep->ex_next; 5301558Srgrimes } 5311558Srgrimes sigsetmask(omask); 5321558Srgrimes if (!xdr_bool(xdrsp, &false)) 5331558Srgrimes return (0); 5341558Srgrimes return (1); 5351558Srgrimeserrout: 5361558Srgrimes sigsetmask(omask); 5371558Srgrimes return (0); 5381558Srgrimes} 5391558Srgrimes 5401558Srgrimes/* 5411558Srgrimes * Called from xdr_explist() to traverse the tree and export the 5421558Srgrimes * directory paths. 5431558Srgrimes */ 5441558Srgrimesint 5451558Srgrimesput_exlist(dp, xdrsp, adp, putdefp) 5461558Srgrimes struct dirlist *dp; 5471558Srgrimes XDR *xdrsp; 5481558Srgrimes struct dirlist *adp; 5491558Srgrimes int *putdefp; 5501558Srgrimes{ 5511558Srgrimes struct grouplist *grp; 5521558Srgrimes struct hostlist *hp; 5531558Srgrimes int true = 1; 5541558Srgrimes int false = 0; 5551558Srgrimes int gotalldir = 0; 5561558Srgrimes char *strp; 5571558Srgrimes 5581558Srgrimes if (dp) { 5591558Srgrimes if (put_exlist(dp->dp_left, xdrsp, adp, putdefp)) 5601558Srgrimes return (1); 5611558Srgrimes if (!xdr_bool(xdrsp, &true)) 5621558Srgrimes return (1); 5631558Srgrimes strp = dp->dp_dirp; 5641558Srgrimes if (!xdr_string(xdrsp, &strp, RPCMNT_PATHLEN)) 5651558Srgrimes return (1); 5661558Srgrimes if (adp && !strcmp(dp->dp_dirp, adp->dp_dirp)) { 5671558Srgrimes gotalldir = 1; 5681558Srgrimes *putdefp = 1; 5691558Srgrimes } 5701558Srgrimes if ((dp->dp_flag & DP_DEFSET) == 0 && 5711558Srgrimes (gotalldir == 0 || (adp->dp_flag & DP_DEFSET) == 0)) { 5721558Srgrimes hp = dp->dp_hosts; 5731558Srgrimes while (hp) { 5741558Srgrimes grp = hp->ht_grp; 5751558Srgrimes if (grp->gr_type == GT_HOST) { 5761558Srgrimes if (!xdr_bool(xdrsp, &true)) 5771558Srgrimes return (1); 5781558Srgrimes strp = grp->gr_ptr.gt_hostent->h_name; 5791558Srgrimes if (!xdr_string(xdrsp, &strp, 5801558Srgrimes RPCMNT_NAMELEN)) 5811558Srgrimes return (1); 5821558Srgrimes } else if (grp->gr_type == GT_NET) { 5831558Srgrimes if (!xdr_bool(xdrsp, &true)) 5841558Srgrimes return (1); 5851558Srgrimes strp = grp->gr_ptr.gt_net.nt_name; 5861558Srgrimes if (!xdr_string(xdrsp, &strp, 5871558Srgrimes RPCMNT_NAMELEN)) 5881558Srgrimes return (1); 5891558Srgrimes } 5901558Srgrimes hp = hp->ht_next; 5911558Srgrimes if (gotalldir && hp == (struct hostlist *)NULL) { 5921558Srgrimes hp = adp->dp_hosts; 5931558Srgrimes gotalldir = 0; 5941558Srgrimes } 5951558Srgrimes } 5961558Srgrimes } 5971558Srgrimes if (!xdr_bool(xdrsp, &false)) 5981558Srgrimes return (1); 5991558Srgrimes if (put_exlist(dp->dp_right, xdrsp, adp, putdefp)) 6001558Srgrimes return (1); 6011558Srgrimes } 6021558Srgrimes return (0); 6031558Srgrimes} 6041558Srgrimes 6051558Srgrimes#define LINESIZ 10240 6061558Srgrimeschar line[LINESIZ]; 6071558SrgrimesFILE *exp_file; 6081558Srgrimes 6091558Srgrimes/* 6101558Srgrimes * Get the export list 6111558Srgrimes */ 6121558Srgrimesvoid 6131558Srgrimesget_exportlist() 6141558Srgrimes{ 6151558Srgrimes struct exportlist *ep, *ep2; 6161558Srgrimes struct grouplist *grp, *tgrp; 6171558Srgrimes struct exportlist **epp; 6181558Srgrimes struct dirlist *dirhead; 6191558Srgrimes struct statfs fsb, *fsp; 6201558Srgrimes struct hostent *hpe; 6211558Srgrimes struct ucred anon; 6221558Srgrimes char *cp, *endcp, *dirp, *hst, *usr, *dom, savedc; 6231558Srgrimes int len, has_host, exflags, got_nondir, dirplen, num, i, netgrp; 6241558Srgrimes 6251558Srgrimes /* 6261558Srgrimes * First, get rid of the old list 6271558Srgrimes */ 6281558Srgrimes ep = exphead; 6291558Srgrimes while (ep) { 6301558Srgrimes ep2 = ep; 6311558Srgrimes ep = ep->ex_next; 6321558Srgrimes free_exp(ep2); 6331558Srgrimes } 6341558Srgrimes exphead = (struct exportlist *)NULL; 6351558Srgrimes 6361558Srgrimes grp = grphead; 6371558Srgrimes while (grp) { 6381558Srgrimes tgrp = grp; 6391558Srgrimes grp = grp->gr_next; 6401558Srgrimes free_grp(tgrp); 6411558Srgrimes } 6421558Srgrimes grphead = (struct grouplist *)NULL; 6431558Srgrimes 6441558Srgrimes /* 6451558Srgrimes * And delete exports that are in the kernel for all local 6461558Srgrimes * file systems. 6471558Srgrimes * XXX: Should know how to handle all local exportable file systems 6481558Srgrimes * instead of just MOUNT_UFS. 6491558Srgrimes */ 6501558Srgrimes num = getmntinfo(&fsp, MNT_NOWAIT); 6511558Srgrimes for (i = 0; i < num; i++) { 6521558Srgrimes union { 6531558Srgrimes struct ufs_args ua; 6541558Srgrimes struct iso_args ia; 6551558Srgrimes struct mfs_args ma; 6561558Srgrimes } targs; 6571558Srgrimes 6581558Srgrimes switch (fsp->f_type) { 6591558Srgrimes case MOUNT_MFS: 6601558Srgrimes case MOUNT_UFS: 6611558Srgrimes case MOUNT_CD9660: 6622898Sdfr case MOUNT_MSDOS: 6631558Srgrimes targs.ua.fspec = NULL; 6641558Srgrimes targs.ua.export.ex_flags = MNT_DELEXPORT; 6651558Srgrimes if (mount(fsp->f_type, fsp->f_mntonname, 6661558Srgrimes fsp->f_flags | MNT_UPDATE, 6671558Srgrimes (caddr_t)&targs) < 0) 6681558Srgrimes syslog(LOG_ERR, "Can't delete exports for %s", 6691558Srgrimes fsp->f_mntonname); 6701558Srgrimes } 6711558Srgrimes fsp++; 6721558Srgrimes } 6731558Srgrimes 6741558Srgrimes /* 6751558Srgrimes * Read in the exports file and build the list, calling 6761558Srgrimes * mount() as we go along to push the export rules into the kernel. 6771558Srgrimes */ 6781558Srgrimes if ((exp_file = fopen(exname, "r")) == NULL) { 6791558Srgrimes syslog(LOG_ERR, "Can't open %s", exname); 6801558Srgrimes exit(2); 6811558Srgrimes } 6821558Srgrimes dirhead = (struct dirlist *)NULL; 6831558Srgrimes while (get_line()) { 6841558Srgrimes if (debug) 6851558Srgrimes fprintf(stderr,"Got line %s\n",line); 6861558Srgrimes cp = line; 6871558Srgrimes nextfield(&cp, &endcp); 6881558Srgrimes if (*cp == '#') 6891558Srgrimes goto nextline; 6901558Srgrimes 6911558Srgrimes /* 6921558Srgrimes * Set defaults. 6931558Srgrimes */ 6941558Srgrimes has_host = FALSE; 6951558Srgrimes anon = def_anon; 6961558Srgrimes exflags = MNT_EXPORTED; 6971558Srgrimes got_nondir = 0; 6981558Srgrimes opt_flags = 0; 6991558Srgrimes ep = (struct exportlist *)NULL; 7001558Srgrimes 7011558Srgrimes /* 7021558Srgrimes * Create new exports list entry 7031558Srgrimes */ 7041558Srgrimes len = endcp-cp; 7051558Srgrimes tgrp = grp = get_grp(); 7061558Srgrimes while (len > 0) { 7071558Srgrimes if (len > RPCMNT_NAMELEN) { 7081558Srgrimes getexp_err(ep, tgrp); 7091558Srgrimes goto nextline; 7101558Srgrimes } 7111558Srgrimes if (*cp == '-') { 7121558Srgrimes if (ep == (struct exportlist *)NULL) { 7131558Srgrimes getexp_err(ep, tgrp); 7141558Srgrimes goto nextline; 7151558Srgrimes } 7161558Srgrimes if (debug) 7171558Srgrimes fprintf(stderr, "doing opt %s\n", cp); 7181558Srgrimes got_nondir = 1; 7191558Srgrimes if (do_opt(&cp, &endcp, ep, grp, &has_host, 7201558Srgrimes &exflags, &anon)) { 7211558Srgrimes getexp_err(ep, tgrp); 7221558Srgrimes goto nextline; 7231558Srgrimes } 7241558Srgrimes } else if (*cp == '/') { 7251558Srgrimes savedc = *endcp; 7261558Srgrimes *endcp = '\0'; 7271558Srgrimes if (check_dirpath(cp) && 7281558Srgrimes statfs(cp, &fsb) >= 0) { 7291558Srgrimes if (got_nondir) { 7301558Srgrimes syslog(LOG_ERR, "Dirs must be first"); 7311558Srgrimes getexp_err(ep, tgrp); 7321558Srgrimes goto nextline; 7331558Srgrimes } 7341558Srgrimes if (ep) { 7351558Srgrimes if (ep->ex_fs.val[0] != fsb.f_fsid.val[0] || 7361558Srgrimes ep->ex_fs.val[1] != fsb.f_fsid.val[1]) { 7371558Srgrimes getexp_err(ep, tgrp); 7381558Srgrimes goto nextline; 7391558Srgrimes } 7401558Srgrimes } else { 7411558Srgrimes /* 7421558Srgrimes * See if this directory is already 7431558Srgrimes * in the list. 7441558Srgrimes */ 7451558Srgrimes ep = ex_search(&fsb.f_fsid); 7461558Srgrimes if (ep == (struct exportlist *)NULL) { 7471558Srgrimes ep = get_exp(); 7481558Srgrimes ep->ex_fs = fsb.f_fsid; 7491558Srgrimes ep->ex_fsdir = (char *) 7501558Srgrimes malloc(strlen(fsb.f_mntonname) + 1); 7511558Srgrimes if (ep->ex_fsdir) 7521558Srgrimes strcpy(ep->ex_fsdir, 7531558Srgrimes fsb.f_mntonname); 7541558Srgrimes else 7551558Srgrimes out_of_mem(); 7561558Srgrimes if (debug) 7571558Srgrimes fprintf(stderr, 7581558Srgrimes "Making new ep fs=0x%x,0x%x\n", 7591558Srgrimes fsb.f_fsid.val[0], 7601558Srgrimes fsb.f_fsid.val[1]); 7611558Srgrimes } else if (debug) 7621558Srgrimes fprintf(stderr, 7631558Srgrimes "Found ep fs=0x%x,0x%x\n", 7641558Srgrimes fsb.f_fsid.val[0], 7651558Srgrimes fsb.f_fsid.val[1]); 7661558Srgrimes } 7671558Srgrimes 7681558Srgrimes /* 7691558Srgrimes * Add dirpath to export mount point. 7701558Srgrimes */ 7711558Srgrimes dirp = add_expdir(&dirhead, cp, len); 7721558Srgrimes dirplen = len; 7731558Srgrimes } else { 7741558Srgrimes getexp_err(ep, tgrp); 7751558Srgrimes goto nextline; 7761558Srgrimes } 7771558Srgrimes *endcp = savedc; 7781558Srgrimes } else { 7791558Srgrimes savedc = *endcp; 7801558Srgrimes *endcp = '\0'; 7811558Srgrimes got_nondir = 1; 7821558Srgrimes if (ep == (struct exportlist *)NULL) { 7831558Srgrimes getexp_err(ep, tgrp); 7841558Srgrimes goto nextline; 7851558Srgrimes } 7861558Srgrimes 7871558Srgrimes /* 7881558Srgrimes * Get the host or netgroup. 7891558Srgrimes */ 7901558Srgrimes setnetgrent(cp); 7911558Srgrimes netgrp = getnetgrent(&hst, &usr, &dom); 7921558Srgrimes do { 7931558Srgrimes if (has_host) { 7941558Srgrimes grp->gr_next = get_grp(); 7951558Srgrimes grp = grp->gr_next; 7961558Srgrimes } 7971558Srgrimes if (netgrp) { 7981558Srgrimes if (get_host(hst, grp)) { 7991558Srgrimes syslog(LOG_ERR, "Bad netgroup %s", cp); 8001558Srgrimes getexp_err(ep, tgrp); 8011558Srgrimes goto nextline; 8021558Srgrimes } 8031558Srgrimes } else if (get_host(cp, grp)) { 8041558Srgrimes getexp_err(ep, tgrp); 8051558Srgrimes goto nextline; 8061558Srgrimes } 8071558Srgrimes has_host = TRUE; 8081558Srgrimes } while (netgrp && getnetgrent(&hst, &usr, &dom)); 8091558Srgrimes endnetgrent(); 8101558Srgrimes *endcp = savedc; 8111558Srgrimes } 8121558Srgrimes cp = endcp; 8131558Srgrimes nextfield(&cp, &endcp); 8141558Srgrimes len = endcp - cp; 8151558Srgrimes } 8161558Srgrimes if (check_options(dirhead)) { 8171558Srgrimes getexp_err(ep, tgrp); 8181558Srgrimes goto nextline; 8191558Srgrimes } 8201558Srgrimes if (!has_host) { 8211558Srgrimes grp->gr_type = GT_HOST; 8221558Srgrimes if (debug) 8231558Srgrimes fprintf(stderr,"Adding a default entry\n"); 8241558Srgrimes /* add a default group and make the grp list NULL */ 8251558Srgrimes hpe = (struct hostent *)malloc(sizeof(struct hostent)); 8261558Srgrimes if (hpe == (struct hostent *)NULL) 8271558Srgrimes out_of_mem(); 8281558Srgrimes hpe->h_name = "Default"; 8291558Srgrimes hpe->h_addrtype = AF_INET; 8301558Srgrimes hpe->h_length = sizeof (u_long); 8311558Srgrimes hpe->h_addr_list = (char **)NULL; 8321558Srgrimes grp->gr_ptr.gt_hostent = hpe; 8331558Srgrimes 8341558Srgrimes /* 8351558Srgrimes * Don't allow a network export coincide with a list of 8361558Srgrimes * host(s) on the same line. 8371558Srgrimes */ 8381558Srgrimes } else if ((opt_flags & OP_NET) && tgrp->gr_next) { 8391558Srgrimes getexp_err(ep, tgrp); 8401558Srgrimes goto nextline; 8411558Srgrimes } 8421558Srgrimes 8431558Srgrimes /* 8441558Srgrimes * Loop through hosts, pushing the exports into the kernel. 8451558Srgrimes * After loop, tgrp points to the start of the list and 8461558Srgrimes * grp points to the last entry in the list. 8471558Srgrimes */ 8481558Srgrimes grp = tgrp; 8491558Srgrimes do { 8501558Srgrimes if (do_mount(ep, grp, exflags, &anon, dirp, 8511558Srgrimes dirplen, &fsb)) { 8521558Srgrimes getexp_err(ep, tgrp); 8531558Srgrimes goto nextline; 8541558Srgrimes } 8551558Srgrimes } while (grp->gr_next && (grp = grp->gr_next)); 8561558Srgrimes 8571558Srgrimes /* 8581558Srgrimes * Success. Update the data structures. 8591558Srgrimes */ 8601558Srgrimes if (has_host) { 8611558Srgrimes hang_dirp(dirhead, tgrp, ep, (opt_flags & OP_ALLDIRS)); 8621558Srgrimes grp->gr_next = grphead; 8631558Srgrimes grphead = tgrp; 8641558Srgrimes } else { 8651558Srgrimes hang_dirp(dirhead, (struct grouplist *)NULL, ep, 8661558Srgrimes (opt_flags & OP_ALLDIRS)); 8671558Srgrimes free_grp(grp); 8681558Srgrimes } 8691558Srgrimes dirhead = (struct dirlist *)NULL; 8701558Srgrimes if ((ep->ex_flag & EX_LINKED) == 0) { 8711558Srgrimes ep2 = exphead; 8721558Srgrimes epp = &exphead; 8731558Srgrimes 8741558Srgrimes /* 8751558Srgrimes * Insert in the list in alphabetical order. 8761558Srgrimes */ 8771558Srgrimes while (ep2 && strcmp(ep2->ex_fsdir, ep->ex_fsdir) < 0) { 8781558Srgrimes epp = &ep2->ex_next; 8791558Srgrimes ep2 = ep2->ex_next; 8801558Srgrimes } 8811558Srgrimes if (ep2) 8821558Srgrimes ep->ex_next = ep2; 8831558Srgrimes *epp = ep; 8841558Srgrimes ep->ex_flag |= EX_LINKED; 8851558Srgrimes } 8861558Srgrimesnextline: 8871558Srgrimes if (dirhead) { 8881558Srgrimes free_dir(dirhead); 8891558Srgrimes dirhead = (struct dirlist *)NULL; 8901558Srgrimes } 8911558Srgrimes } 8921558Srgrimes fclose(exp_file); 8931558Srgrimes} 8941558Srgrimes 8951558Srgrimes/* 8961558Srgrimes * Allocate an export list element 8971558Srgrimes */ 8981558Srgrimesstruct exportlist * 8991558Srgrimesget_exp() 9001558Srgrimes{ 9011558Srgrimes struct exportlist *ep; 9021558Srgrimes 9031558Srgrimes ep = (struct exportlist *)malloc(sizeof (struct exportlist)); 9041558Srgrimes if (ep == (struct exportlist *)NULL) 9051558Srgrimes out_of_mem(); 9061558Srgrimes bzero((caddr_t)ep, sizeof (struct exportlist)); 9071558Srgrimes return (ep); 9081558Srgrimes} 9091558Srgrimes 9101558Srgrimes/* 9111558Srgrimes * Allocate a group list element 9121558Srgrimes */ 9131558Srgrimesstruct grouplist * 9141558Srgrimesget_grp() 9151558Srgrimes{ 9161558Srgrimes struct grouplist *gp; 9171558Srgrimes 9181558Srgrimes gp = (struct grouplist *)malloc(sizeof (struct grouplist)); 9191558Srgrimes if (gp == (struct grouplist *)NULL) 9201558Srgrimes out_of_mem(); 9211558Srgrimes bzero((caddr_t)gp, sizeof (struct grouplist)); 9221558Srgrimes return (gp); 9231558Srgrimes} 9241558Srgrimes 9251558Srgrimes/* 9261558Srgrimes * Clean up upon an error in get_exportlist(). 9271558Srgrimes */ 9281558Srgrimesvoid 9291558Srgrimesgetexp_err(ep, grp) 9301558Srgrimes struct exportlist *ep; 9311558Srgrimes struct grouplist *grp; 9321558Srgrimes{ 9331558Srgrimes struct grouplist *tgrp; 9341558Srgrimes 9351558Srgrimes syslog(LOG_ERR, "Bad exports list line %s", line); 9361558Srgrimes if (ep && (ep->ex_flag & EX_LINKED) == 0) 9371558Srgrimes free_exp(ep); 9381558Srgrimes while (grp) { 9391558Srgrimes tgrp = grp; 9401558Srgrimes grp = grp->gr_next; 9411558Srgrimes free_grp(tgrp); 9421558Srgrimes } 9431558Srgrimes} 9441558Srgrimes 9451558Srgrimes/* 9461558Srgrimes * Search the export list for a matching fs. 9471558Srgrimes */ 9481558Srgrimesstruct exportlist * 9491558Srgrimesex_search(fsid) 9501558Srgrimes fsid_t *fsid; 9511558Srgrimes{ 9521558Srgrimes struct exportlist *ep; 9531558Srgrimes 9541558Srgrimes ep = exphead; 9551558Srgrimes while (ep) { 9561558Srgrimes if (ep->ex_fs.val[0] == fsid->val[0] && 9571558Srgrimes ep->ex_fs.val[1] == fsid->val[1]) 9581558Srgrimes return (ep); 9591558Srgrimes ep = ep->ex_next; 9601558Srgrimes } 9611558Srgrimes return (ep); 9621558Srgrimes} 9631558Srgrimes 9641558Srgrimes/* 9651558Srgrimes * Add a directory path to the list. 9661558Srgrimes */ 9671558Srgrimeschar * 9681558Srgrimesadd_expdir(dpp, cp, len) 9691558Srgrimes struct dirlist **dpp; 9701558Srgrimes char *cp; 9711558Srgrimes int len; 9721558Srgrimes{ 9731558Srgrimes struct dirlist *dp; 9741558Srgrimes 9751558Srgrimes dp = (struct dirlist *)malloc(sizeof (struct dirlist) + len); 9761558Srgrimes dp->dp_left = *dpp; 9771558Srgrimes dp->dp_right = (struct dirlist *)NULL; 9781558Srgrimes dp->dp_flag = 0; 9791558Srgrimes dp->dp_hosts = (struct hostlist *)NULL; 9801558Srgrimes strcpy(dp->dp_dirp, cp); 9811558Srgrimes *dpp = dp; 9821558Srgrimes return (dp->dp_dirp); 9831558Srgrimes} 9841558Srgrimes 9851558Srgrimes/* 9861558Srgrimes * Hang the dir list element off the dirpath binary tree as required 9871558Srgrimes * and update the entry for host. 9881558Srgrimes */ 9891558Srgrimesvoid 9901558Srgrimeshang_dirp(dp, grp, ep, alldirs) 9911558Srgrimes struct dirlist *dp; 9921558Srgrimes struct grouplist *grp; 9931558Srgrimes struct exportlist *ep; 9941558Srgrimes int alldirs; 9951558Srgrimes{ 9961558Srgrimes struct hostlist *hp; 9971558Srgrimes struct dirlist *dp2; 9981558Srgrimes 9991558Srgrimes if (alldirs) { 10001558Srgrimes if (ep->ex_defdir) 10011558Srgrimes free((caddr_t)dp); 10021558Srgrimes else 10031558Srgrimes ep->ex_defdir = dp; 10041558Srgrimes if (grp == (struct grouplist *)NULL) 10051558Srgrimes ep->ex_defdir->dp_flag |= DP_DEFSET; 10061558Srgrimes else while (grp) { 10071558Srgrimes hp = get_ht(); 10081558Srgrimes hp->ht_grp = grp; 10091558Srgrimes hp->ht_next = ep->ex_defdir->dp_hosts; 10101558Srgrimes ep->ex_defdir->dp_hosts = hp; 10111558Srgrimes grp = grp->gr_next; 10121558Srgrimes } 10131558Srgrimes } else { 10141558Srgrimes 10151558Srgrimes /* 10161558Srgrimes * Loop throught the directories adding them to the tree. 10171558Srgrimes */ 10181558Srgrimes while (dp) { 10191558Srgrimes dp2 = dp->dp_left; 10201558Srgrimes add_dlist(&ep->ex_dirl, dp, grp); 10211558Srgrimes dp = dp2; 10221558Srgrimes } 10231558Srgrimes } 10241558Srgrimes} 10251558Srgrimes 10261558Srgrimes/* 10271558Srgrimes * Traverse the binary tree either updating a node that is already there 10281558Srgrimes * for the new directory or adding the new node. 10291558Srgrimes */ 10301558Srgrimesvoid 10311558Srgrimesadd_dlist(dpp, newdp, grp) 10321558Srgrimes struct dirlist **dpp; 10331558Srgrimes struct dirlist *newdp; 10341558Srgrimes struct grouplist *grp; 10351558Srgrimes{ 10361558Srgrimes struct dirlist *dp; 10371558Srgrimes struct hostlist *hp; 10381558Srgrimes int cmp; 10391558Srgrimes 10401558Srgrimes dp = *dpp; 10411558Srgrimes if (dp) { 10421558Srgrimes cmp = strcmp(dp->dp_dirp, newdp->dp_dirp); 10431558Srgrimes if (cmp > 0) { 10441558Srgrimes add_dlist(&dp->dp_left, newdp, grp); 10451558Srgrimes return; 10461558Srgrimes } else if (cmp < 0) { 10471558Srgrimes add_dlist(&dp->dp_right, newdp, grp); 10481558Srgrimes return; 10491558Srgrimes } else 10501558Srgrimes free((caddr_t)newdp); 10511558Srgrimes } else { 10521558Srgrimes dp = newdp; 10531558Srgrimes dp->dp_left = (struct dirlist *)NULL; 10541558Srgrimes *dpp = dp; 10551558Srgrimes } 10561558Srgrimes if (grp) { 10571558Srgrimes 10581558Srgrimes /* 10591558Srgrimes * Hang all of the host(s) off of the directory point. 10601558Srgrimes */ 10611558Srgrimes do { 10621558Srgrimes hp = get_ht(); 10631558Srgrimes hp->ht_grp = grp; 10641558Srgrimes hp->ht_next = dp->dp_hosts; 10651558Srgrimes dp->dp_hosts = hp; 10661558Srgrimes grp = grp->gr_next; 10671558Srgrimes } while (grp); 10681558Srgrimes } else 10691558Srgrimes dp->dp_flag |= DP_DEFSET; 10701558Srgrimes} 10711558Srgrimes 10721558Srgrimes/* 10731558Srgrimes * Search for a dirpath on the export point. 10741558Srgrimes */ 10751558Srgrimesstruct dirlist * 10761558Srgrimesdirp_search(dp, dirpath) 10771558Srgrimes struct dirlist *dp; 10781558Srgrimes char *dirpath; 10791558Srgrimes{ 10801558Srgrimes int cmp; 10811558Srgrimes 10821558Srgrimes if (dp) { 10831558Srgrimes cmp = strcmp(dp->dp_dirp, dirpath); 10841558Srgrimes if (cmp > 0) 10851558Srgrimes return (dirp_search(dp->dp_left, dirpath)); 10861558Srgrimes else if (cmp < 0) 10871558Srgrimes return (dirp_search(dp->dp_right, dirpath)); 10881558Srgrimes else 10891558Srgrimes return (dp); 10901558Srgrimes } 10911558Srgrimes return (dp); 10921558Srgrimes} 10931558Srgrimes 10941558Srgrimes/* 10951558Srgrimes * Scan for a host match in a directory tree. 10961558Srgrimes */ 10971558Srgrimesint 10981558Srgrimeschk_host(dp, saddr, defsetp) 10991558Srgrimes struct dirlist *dp; 11001558Srgrimes u_long saddr; 11011558Srgrimes int *defsetp; 11021558Srgrimes{ 11031558Srgrimes struct hostlist *hp; 11041558Srgrimes struct grouplist *grp; 11051558Srgrimes u_long **addrp; 11061558Srgrimes 11071558Srgrimes if (dp) { 11081558Srgrimes if (dp->dp_flag & DP_DEFSET) 11091558Srgrimes *defsetp = 1; 11101558Srgrimes hp = dp->dp_hosts; 11111558Srgrimes while (hp) { 11121558Srgrimes grp = hp->ht_grp; 11131558Srgrimes switch (grp->gr_type) { 11141558Srgrimes case GT_HOST: 11151558Srgrimes addrp = (u_long **) 11161558Srgrimes grp->gr_ptr.gt_hostent->h_addr_list; 11171558Srgrimes while (*addrp) { 11181558Srgrimes if (**addrp == saddr) 11191558Srgrimes return (1); 11201558Srgrimes addrp++; 11211558Srgrimes } 11221558Srgrimes break; 11231558Srgrimes case GT_NET: 11241558Srgrimes if ((saddr & grp->gr_ptr.gt_net.nt_mask) == 11251558Srgrimes grp->gr_ptr.gt_net.nt_net) 11261558Srgrimes return (1); 11271558Srgrimes break; 11281558Srgrimes }; 11291558Srgrimes hp = hp->ht_next; 11301558Srgrimes } 11311558Srgrimes } 11321558Srgrimes return (0); 11331558Srgrimes} 11341558Srgrimes 11351558Srgrimes/* 11361558Srgrimes * Scan tree for a host that matches the address. 11371558Srgrimes */ 11381558Srgrimesint 11391558Srgrimesscan_tree(dp, saddr) 11401558Srgrimes struct dirlist *dp; 11411558Srgrimes u_long saddr; 11421558Srgrimes{ 11431558Srgrimes int defset; 11441558Srgrimes 11451558Srgrimes if (dp) { 11461558Srgrimes if (scan_tree(dp->dp_left, saddr)) 11471558Srgrimes return (1); 11481558Srgrimes if (chk_host(dp, saddr, &defset)) 11491558Srgrimes return (1); 11501558Srgrimes if (scan_tree(dp->dp_right, saddr)) 11511558Srgrimes return (1); 11521558Srgrimes } 11531558Srgrimes return (0); 11541558Srgrimes} 11551558Srgrimes 11561558Srgrimes/* 11571558Srgrimes * Traverse the dirlist tree and free it up. 11581558Srgrimes */ 11591558Srgrimesvoid 11601558Srgrimesfree_dir(dp) 11611558Srgrimes struct dirlist *dp; 11621558Srgrimes{ 11631558Srgrimes 11641558Srgrimes if (dp) { 11651558Srgrimes free_dir(dp->dp_left); 11661558Srgrimes free_dir(dp->dp_right); 11671558Srgrimes free_host(dp->dp_hosts); 11681558Srgrimes free((caddr_t)dp); 11691558Srgrimes } 11701558Srgrimes} 11711558Srgrimes 11721558Srgrimes/* 11731558Srgrimes * Parse the option string and update fields. 11741558Srgrimes * Option arguments may either be -<option>=<value> or 11751558Srgrimes * -<option> <value> 11761558Srgrimes */ 11771558Srgrimesint 11781558Srgrimesdo_opt(cpp, endcpp, ep, grp, has_hostp, exflagsp, cr) 11791558Srgrimes char **cpp, **endcpp; 11801558Srgrimes struct exportlist *ep; 11811558Srgrimes struct grouplist *grp; 11821558Srgrimes int *has_hostp; 11831558Srgrimes int *exflagsp; 11841558Srgrimes struct ucred *cr; 11851558Srgrimes{ 11861558Srgrimes char *cpoptarg, *cpoptend; 11871558Srgrimes char *cp, *endcp, *cpopt, savedc, savedc2; 11881558Srgrimes int allflag, usedarg; 11891558Srgrimes 11901558Srgrimes cpopt = *cpp; 11911558Srgrimes cpopt++; 11921558Srgrimes cp = *endcpp; 11931558Srgrimes savedc = *cp; 11941558Srgrimes *cp = '\0'; 11951558Srgrimes while (cpopt && *cpopt) { 11961558Srgrimes allflag = 1; 11971558Srgrimes usedarg = -2; 11981558Srgrimes if (cpoptend = index(cpopt, ',')) { 11991558Srgrimes *cpoptend++ = '\0'; 12001558Srgrimes if (cpoptarg = index(cpopt, '=')) 12011558Srgrimes *cpoptarg++ = '\0'; 12021558Srgrimes } else { 12031558Srgrimes if (cpoptarg = index(cpopt, '=')) 12041558Srgrimes *cpoptarg++ = '\0'; 12051558Srgrimes else { 12061558Srgrimes *cp = savedc; 12071558Srgrimes nextfield(&cp, &endcp); 12081558Srgrimes **endcpp = '\0'; 12091558Srgrimes if (endcp > cp && *cp != '-') { 12101558Srgrimes cpoptarg = cp; 12111558Srgrimes savedc2 = *endcp; 12121558Srgrimes *endcp = '\0'; 12131558Srgrimes usedarg = 0; 12141558Srgrimes } 12151558Srgrimes } 12161558Srgrimes } 12171558Srgrimes if (!strcmp(cpopt, "ro") || !strcmp(cpopt, "o")) { 12181558Srgrimes *exflagsp |= MNT_EXRDONLY; 12191558Srgrimes } else if (cpoptarg && (!strcmp(cpopt, "maproot") || 12201558Srgrimes !(allflag = strcmp(cpopt, "mapall")) || 12211558Srgrimes !strcmp(cpopt, "root") || !strcmp(cpopt, "r"))) { 12221558Srgrimes usedarg++; 12231558Srgrimes parsecred(cpoptarg, cr); 12241558Srgrimes if (allflag == 0) { 12251558Srgrimes *exflagsp |= MNT_EXPORTANON; 12261558Srgrimes opt_flags |= OP_MAPALL; 12271558Srgrimes } else 12281558Srgrimes opt_flags |= OP_MAPROOT; 12291558Srgrimes } else if (!strcmp(cpopt, "kerb") || !strcmp(cpopt, "k")) { 12301558Srgrimes *exflagsp |= MNT_EXKERB; 12311558Srgrimes opt_flags |= OP_KERB; 12321558Srgrimes } else if (cpoptarg && (!strcmp(cpopt, "mask") || 12331558Srgrimes !strcmp(cpopt, "m"))) { 12341558Srgrimes if (get_net(cpoptarg, &grp->gr_ptr.gt_net, 1)) { 12351558Srgrimes syslog(LOG_ERR, "Bad mask: %s", cpoptarg); 12361558Srgrimes return (1); 12371558Srgrimes } 12381558Srgrimes usedarg++; 12391558Srgrimes opt_flags |= OP_MASK; 12401558Srgrimes } else if (cpoptarg && (!strcmp(cpopt, "network") || 12411558Srgrimes !strcmp(cpopt, "n"))) { 12421558Srgrimes if (grp->gr_type != GT_NULL) { 12431558Srgrimes syslog(LOG_ERR, "Network/host conflict"); 12441558Srgrimes return (1); 12451558Srgrimes } else if (get_net(cpoptarg, &grp->gr_ptr.gt_net, 0)) { 12461558Srgrimes syslog(LOG_ERR, "Bad net: %s", cpoptarg); 12471558Srgrimes return (1); 12481558Srgrimes } 12491558Srgrimes grp->gr_type = GT_NET; 12501558Srgrimes *has_hostp = 1; 12511558Srgrimes usedarg++; 12521558Srgrimes opt_flags |= OP_NET; 12531558Srgrimes } else if (!strcmp(cpopt, "alldirs")) { 12541558Srgrimes opt_flags |= OP_ALLDIRS; 12551558Srgrimes#ifdef ISO 12561558Srgrimes } else if (cpoptarg && !strcmp(cpopt, "iso")) { 12571558Srgrimes if (get_isoaddr(cpoptarg, grp)) { 12581558Srgrimes syslog(LOG_ERR, "Bad iso addr: %s", cpoptarg); 12591558Srgrimes return (1); 12601558Srgrimes } 12611558Srgrimes *has_hostp = 1; 12621558Srgrimes usedarg++; 12631558Srgrimes opt_flags |= OP_ISO; 12641558Srgrimes#endif /* ISO */ 12651558Srgrimes } else { 12661558Srgrimes syslog(LOG_ERR, "Bad opt %s", cpopt); 12671558Srgrimes return (1); 12681558Srgrimes } 12691558Srgrimes if (usedarg >= 0) { 12701558Srgrimes *endcp = savedc2; 12711558Srgrimes **endcpp = savedc; 12721558Srgrimes if (usedarg > 0) { 12731558Srgrimes *cpp = cp; 12741558Srgrimes *endcpp = endcp; 12751558Srgrimes } 12761558Srgrimes return (0); 12771558Srgrimes } 12781558Srgrimes cpopt = cpoptend; 12791558Srgrimes } 12801558Srgrimes **endcpp = savedc; 12811558Srgrimes return (0); 12821558Srgrimes} 12831558Srgrimes 12841558Srgrimes/* 12851558Srgrimes * Translate a character string to the corresponding list of network 12861558Srgrimes * addresses for a hostname. 12871558Srgrimes */ 12881558Srgrimesint 12891558Srgrimesget_host(cp, grp) 12901558Srgrimes char *cp; 12911558Srgrimes struct grouplist *grp; 12921558Srgrimes{ 12931558Srgrimes struct hostent *hp, *nhp; 12941558Srgrimes char **addrp, **naddrp; 12951558Srgrimes struct hostent t_host; 12961558Srgrimes int i; 12971558Srgrimes u_long saddr; 12981558Srgrimes char *aptr[2]; 12991558Srgrimes 13001558Srgrimes if (grp->gr_type != GT_NULL) 13011558Srgrimes return (1); 13021558Srgrimes if ((hp = gethostbyname(cp)) == NULL) { 13031558Srgrimes if (isdigit(*cp)) { 13041558Srgrimes saddr = inet_addr(cp); 13051558Srgrimes if (saddr == -1) { 13061558Srgrimes syslog(LOG_ERR, "Inet_addr failed"); 13071558Srgrimes return (1); 13081558Srgrimes } 13091558Srgrimes if ((hp = gethostbyaddr((caddr_t)&saddr, sizeof (saddr), 13101558Srgrimes AF_INET)) == NULL) { 13111558Srgrimes hp = &t_host; 13121558Srgrimes hp->h_name = cp; 13131558Srgrimes hp->h_addrtype = AF_INET; 13141558Srgrimes hp->h_length = sizeof (u_long); 13151558Srgrimes hp->h_addr_list = aptr; 13161558Srgrimes aptr[0] = (char *)&saddr; 13171558Srgrimes aptr[1] = (char *)NULL; 13181558Srgrimes } 13191558Srgrimes } else { 13201558Srgrimes syslog(LOG_ERR, "Gethostbyname failed"); 13211558Srgrimes return (1); 13221558Srgrimes } 13231558Srgrimes } 13241558Srgrimes grp->gr_type = GT_HOST; 13251558Srgrimes nhp = grp->gr_ptr.gt_hostent = (struct hostent *) 13261558Srgrimes malloc(sizeof(struct hostent)); 13271558Srgrimes if (nhp == (struct hostent *)NULL) 13281558Srgrimes out_of_mem(); 13291558Srgrimes bcopy((caddr_t)hp, (caddr_t)nhp, 13301558Srgrimes sizeof(struct hostent)); 13311558Srgrimes i = strlen(hp->h_name)+1; 13321558Srgrimes nhp->h_name = (char *)malloc(i); 13331558Srgrimes if (nhp->h_name == (char *)NULL) 13341558Srgrimes out_of_mem(); 13351558Srgrimes bcopy(hp->h_name, nhp->h_name, i); 13361558Srgrimes addrp = hp->h_addr_list; 13371558Srgrimes i = 1; 13381558Srgrimes while (*addrp++) 13391558Srgrimes i++; 13401558Srgrimes naddrp = nhp->h_addr_list = (char **) 13411558Srgrimes malloc(i*sizeof(char *)); 13421558Srgrimes if (naddrp == (char **)NULL) 13431558Srgrimes out_of_mem(); 13441558Srgrimes addrp = hp->h_addr_list; 13451558Srgrimes while (*addrp) { 13461558Srgrimes *naddrp = (char *) 13471558Srgrimes malloc(hp->h_length); 13481558Srgrimes if (*naddrp == (char *)NULL) 13491558Srgrimes out_of_mem(); 13501558Srgrimes bcopy(*addrp, *naddrp, 13511558Srgrimes hp->h_length); 13521558Srgrimes addrp++; 13531558Srgrimes naddrp++; 13541558Srgrimes } 13551558Srgrimes *naddrp = (char *)NULL; 13561558Srgrimes if (debug) 13571558Srgrimes fprintf(stderr, "got host %s\n", hp->h_name); 13581558Srgrimes return (0); 13591558Srgrimes} 13601558Srgrimes 13611558Srgrimes/* 13621558Srgrimes * Free up an exports list component 13631558Srgrimes */ 13641558Srgrimesvoid 13651558Srgrimesfree_exp(ep) 13661558Srgrimes struct exportlist *ep; 13671558Srgrimes{ 13681558Srgrimes 13691558Srgrimes if (ep->ex_defdir) { 13701558Srgrimes free_host(ep->ex_defdir->dp_hosts); 13711558Srgrimes free((caddr_t)ep->ex_defdir); 13721558Srgrimes } 13731558Srgrimes if (ep->ex_fsdir) 13741558Srgrimes free(ep->ex_fsdir); 13751558Srgrimes free_dir(ep->ex_dirl); 13761558Srgrimes free((caddr_t)ep); 13771558Srgrimes} 13781558Srgrimes 13791558Srgrimes/* 13801558Srgrimes * Free hosts. 13811558Srgrimes */ 13821558Srgrimesvoid 13831558Srgrimesfree_host(hp) 13841558Srgrimes struct hostlist *hp; 13851558Srgrimes{ 13861558Srgrimes struct hostlist *hp2; 13871558Srgrimes 13881558Srgrimes while (hp) { 13891558Srgrimes hp2 = hp; 13901558Srgrimes hp = hp->ht_next; 13911558Srgrimes free((caddr_t)hp2); 13921558Srgrimes } 13931558Srgrimes} 13941558Srgrimes 13951558Srgrimesstruct hostlist * 13961558Srgrimesget_ht() 13971558Srgrimes{ 13981558Srgrimes struct hostlist *hp; 13991558Srgrimes 14001558Srgrimes hp = (struct hostlist *)malloc(sizeof (struct hostlist)); 14011558Srgrimes if (hp == (struct hostlist *)NULL) 14021558Srgrimes out_of_mem(); 14031558Srgrimes hp->ht_next = (struct hostlist *)NULL; 14041558Srgrimes return (hp); 14051558Srgrimes} 14061558Srgrimes 14071558Srgrimes#ifdef ISO 14081558Srgrimes/* 14091558Srgrimes * Translate an iso address. 14101558Srgrimes */ 14111558Srgrimesget_isoaddr(cp, grp) 14121558Srgrimes char *cp; 14131558Srgrimes struct grouplist *grp; 14141558Srgrimes{ 14151558Srgrimes struct iso_addr *isop; 14161558Srgrimes struct sockaddr_iso *isoaddr; 14171558Srgrimes 14181558Srgrimes if (grp->gr_type != GT_NULL) 14191558Srgrimes return (1); 14201558Srgrimes if ((isop = iso_addr(cp)) == NULL) { 14211558Srgrimes syslog(LOG_ERR, 14221558Srgrimes "iso_addr failed, ignored"); 14231558Srgrimes return (1); 14241558Srgrimes } 14251558Srgrimes isoaddr = (struct sockaddr_iso *) 14261558Srgrimes malloc(sizeof (struct sockaddr_iso)); 14271558Srgrimes if (isoaddr == (struct sockaddr_iso *)NULL) 14281558Srgrimes out_of_mem(); 14291558Srgrimes bzero((caddr_t)isoaddr, sizeof (struct sockaddr_iso)); 14301558Srgrimes bcopy((caddr_t)isop, (caddr_t)&isoaddr->siso_addr, 14311558Srgrimes sizeof (struct iso_addr)); 14321558Srgrimes isoaddr->siso_len = sizeof (struct sockaddr_iso); 14331558Srgrimes isoaddr->siso_family = AF_ISO; 14341558Srgrimes grp->gr_type = GT_ISO; 14351558Srgrimes grp->gr_ptr.gt_isoaddr = isoaddr; 14361558Srgrimes return (0); 14371558Srgrimes} 14381558Srgrimes#endif /* ISO */ 14391558Srgrimes 14401558Srgrimes/* 14411558Srgrimes * Out of memory, fatal 14421558Srgrimes */ 14431558Srgrimesvoid 14441558Srgrimesout_of_mem() 14451558Srgrimes{ 14461558Srgrimes 14471558Srgrimes syslog(LOG_ERR, "Out of memory"); 14481558Srgrimes exit(2); 14491558Srgrimes} 14501558Srgrimes 14511558Srgrimes/* 14521558Srgrimes * Do the mount syscall with the update flag to push the export info into 14531558Srgrimes * the kernel. 14541558Srgrimes */ 14551558Srgrimesint 14561558Srgrimesdo_mount(ep, grp, exflags, anoncrp, dirp, dirplen, fsb) 14571558Srgrimes struct exportlist *ep; 14581558Srgrimes struct grouplist *grp; 14591558Srgrimes int exflags; 14601558Srgrimes struct ucred *anoncrp; 14611558Srgrimes char *dirp; 14621558Srgrimes int dirplen; 14631558Srgrimes struct statfs *fsb; 14641558Srgrimes{ 14651558Srgrimes char *cp = (char *)NULL; 14661558Srgrimes u_long **addrp; 14671558Srgrimes int done; 14681558Srgrimes char savedc = '\0'; 14691558Srgrimes struct sockaddr_in sin, imask; 14701558Srgrimes union { 14711558Srgrimes struct ufs_args ua; 14721558Srgrimes struct iso_args ia; 14731558Srgrimes struct mfs_args ma; 14741558Srgrimes } args; 14751558Srgrimes u_long net; 14761558Srgrimes 14771558Srgrimes args.ua.fspec = 0; 14781558Srgrimes args.ua.export.ex_flags = exflags; 14791558Srgrimes args.ua.export.ex_anon = *anoncrp; 14801558Srgrimes bzero((char *)&sin, sizeof(sin)); 14811558Srgrimes bzero((char *)&imask, sizeof(imask)); 14821558Srgrimes sin.sin_family = AF_INET; 14831558Srgrimes sin.sin_len = sizeof(sin); 14841558Srgrimes imask.sin_family = AF_INET; 14851558Srgrimes imask.sin_len = sizeof(sin); 14861558Srgrimes if (grp->gr_type == GT_HOST) 14871558Srgrimes addrp = (u_long **)grp->gr_ptr.gt_hostent->h_addr_list; 14881558Srgrimes else 14891558Srgrimes addrp = (u_long **)NULL; 14901558Srgrimes done = FALSE; 14911558Srgrimes while (!done) { 14921558Srgrimes switch (grp->gr_type) { 14931558Srgrimes case GT_HOST: 14941558Srgrimes if (addrp) { 14951558Srgrimes sin.sin_addr.s_addr = **addrp; 14961558Srgrimes args.ua.export.ex_addrlen = sizeof(sin); 14971558Srgrimes } else 14981558Srgrimes args.ua.export.ex_addrlen = 0; 14991558Srgrimes args.ua.export.ex_addr = (struct sockaddr *)&sin; 15001558Srgrimes args.ua.export.ex_masklen = 0; 15011558Srgrimes break; 15021558Srgrimes case GT_NET: 15031558Srgrimes if (grp->gr_ptr.gt_net.nt_mask) 15041558Srgrimes imask.sin_addr.s_addr = grp->gr_ptr.gt_net.nt_mask; 15051558Srgrimes else { 15061558Srgrimes net = ntohl(grp->gr_ptr.gt_net.nt_net); 15071558Srgrimes if (IN_CLASSA(net)) 15081558Srgrimes imask.sin_addr.s_addr = inet_addr("255.0.0.0"); 15091558Srgrimes else if (IN_CLASSB(net)) 15101558Srgrimes imask.sin_addr.s_addr = 15111558Srgrimes inet_addr("255.255.0.0"); 15121558Srgrimes else 15131558Srgrimes imask.sin_addr.s_addr = 15141558Srgrimes inet_addr("255.255.255.0"); 15151558Srgrimes grp->gr_ptr.gt_net.nt_mask = imask.sin_addr.s_addr; 15161558Srgrimes } 15171558Srgrimes sin.sin_addr.s_addr = grp->gr_ptr.gt_net.nt_net; 15181558Srgrimes args.ua.export.ex_addr = (struct sockaddr *)&sin; 15191558Srgrimes args.ua.export.ex_addrlen = sizeof (sin); 15201558Srgrimes args.ua.export.ex_mask = (struct sockaddr *)&imask; 15211558Srgrimes args.ua.export.ex_masklen = sizeof (imask); 15221558Srgrimes break; 15231558Srgrimes#ifdef ISO 15241558Srgrimes case GT_ISO: 15251558Srgrimes args.ua.export.ex_addr = 15261558Srgrimes (struct sockaddr *)grp->gr_ptr.gt_isoaddr; 15271558Srgrimes args.ua.export.ex_addrlen = 15281558Srgrimes sizeof(struct sockaddr_iso); 15291558Srgrimes args.ua.export.ex_masklen = 0; 15301558Srgrimes break; 15311558Srgrimes#endif /* ISO */ 15321558Srgrimes default: 15331558Srgrimes syslog(LOG_ERR, "Bad grouptype"); 15341558Srgrimes if (cp) 15351558Srgrimes *cp = savedc; 15361558Srgrimes return (1); 15371558Srgrimes }; 15381558Srgrimes 15391558Srgrimes /* 15401558Srgrimes * XXX: 15411558Srgrimes * Maybe I should just use the fsb->f_mntonname path instead 15421558Srgrimes * of looping back up the dirp to the mount point?? 15431558Srgrimes * Also, needs to know how to export all types of local 15441558Srgrimes * exportable file systems and not just MOUNT_UFS. 15451558Srgrimes */ 15461558Srgrimes while (mount(fsb->f_type, dirp, 15471558Srgrimes fsb->f_flags | MNT_UPDATE, (caddr_t)&args) < 0) { 15481558Srgrimes if (cp) 15491558Srgrimes *cp-- = savedc; 15501558Srgrimes else 15511558Srgrimes cp = dirp + dirplen - 1; 15521558Srgrimes if (errno == EPERM) { 15531558Srgrimes syslog(LOG_ERR, 15541558Srgrimes "Can't change attributes for %s.\n", dirp); 15551558Srgrimes return (1); 15561558Srgrimes } 15571558Srgrimes if (opt_flags & OP_ALLDIRS) { 15581558Srgrimes syslog(LOG_ERR, "Not root dir"); 15591558Srgrimes return (1); 15601558Srgrimes } 15611558Srgrimes /* back up over the last component */ 15621558Srgrimes while (*cp == '/' && cp > dirp) 15631558Srgrimes cp--; 15641558Srgrimes while (*(cp - 1) != '/' && cp > dirp) 15651558Srgrimes cp--; 15661558Srgrimes if (cp == dirp) { 15671558Srgrimes if (debug) 15681558Srgrimes fprintf(stderr,"mnt unsucc\n"); 15691558Srgrimes syslog(LOG_ERR, "Can't export %s", dirp); 15701558Srgrimes return (1); 15711558Srgrimes } 15721558Srgrimes savedc = *cp; 15731558Srgrimes *cp = '\0'; 15741558Srgrimes } 15751558Srgrimes if (addrp) { 15761558Srgrimes ++addrp; 15771558Srgrimes if (*addrp == (u_long *)NULL) 15781558Srgrimes done = TRUE; 15791558Srgrimes } else 15801558Srgrimes done = TRUE; 15811558Srgrimes } 15821558Srgrimes if (cp) 15831558Srgrimes *cp = savedc; 15841558Srgrimes return (0); 15851558Srgrimes} 15861558Srgrimes 15871558Srgrimes/* 15881558Srgrimes * Translate a net address. 15891558Srgrimes */ 15901558Srgrimesint 15911558Srgrimesget_net(cp, net, maskflg) 15921558Srgrimes char *cp; 15931558Srgrimes struct netmsk *net; 15941558Srgrimes int maskflg; 15951558Srgrimes{ 15961558Srgrimes struct netent *np; 15971558Srgrimes long netaddr; 15981558Srgrimes struct in_addr inetaddr, inetaddr2; 15991558Srgrimes char *name; 16001558Srgrimes 16011558Srgrimes if (np = getnetbyname(cp)) 16021558Srgrimes inetaddr = inet_makeaddr(np->n_net, 0); 16031558Srgrimes else if (isdigit(*cp)) { 16041558Srgrimes if ((netaddr = inet_network(cp)) == -1) 16051558Srgrimes return (1); 16061558Srgrimes inetaddr = inet_makeaddr(netaddr, 0); 16071558Srgrimes /* 16081558Srgrimes * Due to arbritrary subnet masks, you don't know how many 16091558Srgrimes * bits to shift the address to make it into a network, 16101558Srgrimes * however you do know how to make a network address into 16111558Srgrimes * a host with host == 0 and then compare them. 16121558Srgrimes * (What a pest) 16131558Srgrimes */ 16141558Srgrimes if (!maskflg) { 16151558Srgrimes setnetent(0); 16161558Srgrimes while (np = getnetent()) { 16171558Srgrimes inetaddr2 = inet_makeaddr(np->n_net, 0); 16181558Srgrimes if (inetaddr2.s_addr == inetaddr.s_addr) 16191558Srgrimes break; 16201558Srgrimes } 16211558Srgrimes endnetent(); 16221558Srgrimes } 16231558Srgrimes } else 16241558Srgrimes return (1); 16251558Srgrimes if (maskflg) 16261558Srgrimes net->nt_mask = inetaddr.s_addr; 16271558Srgrimes else { 16281558Srgrimes if (np) 16291558Srgrimes name = np->n_name; 16301558Srgrimes else 16311558Srgrimes name = inet_ntoa(inetaddr); 16321558Srgrimes net->nt_name = (char *)malloc(strlen(name) + 1); 16331558Srgrimes if (net->nt_name == (char *)NULL) 16341558Srgrimes out_of_mem(); 16351558Srgrimes strcpy(net->nt_name, name); 16361558Srgrimes net->nt_net = inetaddr.s_addr; 16371558Srgrimes } 16381558Srgrimes return (0); 16391558Srgrimes} 16401558Srgrimes 16411558Srgrimes/* 16421558Srgrimes * Parse out the next white space separated field 16431558Srgrimes */ 16441558Srgrimesvoid 16451558Srgrimesnextfield(cp, endcp) 16461558Srgrimes char **cp; 16471558Srgrimes char **endcp; 16481558Srgrimes{ 16491558Srgrimes char *p; 16501558Srgrimes 16511558Srgrimes p = *cp; 16521558Srgrimes while (*p == ' ' || *p == '\t') 16531558Srgrimes p++; 16541558Srgrimes if (*p == '\n' || *p == '\0') 16551558Srgrimes *cp = *endcp = p; 16561558Srgrimes else { 16571558Srgrimes *cp = p++; 16581558Srgrimes while (*p != ' ' && *p != '\t' && *p != '\n' && *p != '\0') 16591558Srgrimes p++; 16601558Srgrimes *endcp = p; 16611558Srgrimes } 16621558Srgrimes} 16631558Srgrimes 16641558Srgrimes/* 16651558Srgrimes * Get an exports file line. Skip over blank lines and handle line 16661558Srgrimes * continuations. 16671558Srgrimes */ 16681558Srgrimesint 16691558Srgrimesget_line() 16701558Srgrimes{ 16711558Srgrimes char *p, *cp; 16721558Srgrimes int len; 16731558Srgrimes int totlen, cont_line; 16741558Srgrimes 16751558Srgrimes /* 16761558Srgrimes * Loop around ignoring blank lines and getting all continuation lines. 16771558Srgrimes */ 16781558Srgrimes p = line; 16791558Srgrimes totlen = 0; 16801558Srgrimes do { 16811558Srgrimes if (fgets(p, LINESIZ - totlen, exp_file) == NULL) 16821558Srgrimes return (0); 16831558Srgrimes len = strlen(p); 16841558Srgrimes cp = p + len - 1; 16851558Srgrimes cont_line = 0; 16861558Srgrimes while (cp >= p && 16871558Srgrimes (*cp == ' ' || *cp == '\t' || *cp == '\n' || *cp == '\\')) { 16881558Srgrimes if (*cp == '\\') 16891558Srgrimes cont_line = 1; 16901558Srgrimes cp--; 16911558Srgrimes len--; 16921558Srgrimes } 16931558Srgrimes *++cp = '\0'; 16941558Srgrimes if (len > 0) { 16951558Srgrimes totlen += len; 16961558Srgrimes if (totlen >= LINESIZ) { 16971558Srgrimes syslog(LOG_ERR, "Exports line too long"); 16981558Srgrimes exit(2); 16991558Srgrimes } 17001558Srgrimes p = cp; 17011558Srgrimes } 17021558Srgrimes } while (totlen == 0 || cont_line); 17031558Srgrimes return (1); 17041558Srgrimes} 17051558Srgrimes 17061558Srgrimes/* 17071558Srgrimes * Parse a description of a credential. 17081558Srgrimes */ 17091558Srgrimesvoid 17101558Srgrimesparsecred(namelist, cr) 17111558Srgrimes char *namelist; 17121558Srgrimes struct ucred *cr; 17131558Srgrimes{ 17141558Srgrimes char *name; 17151558Srgrimes int cnt; 17161558Srgrimes char *names; 17171558Srgrimes struct passwd *pw; 17181558Srgrimes struct group *gr; 17191558Srgrimes int ngroups, groups[NGROUPS + 1]; 17201558Srgrimes 17211558Srgrimes /* 17221558Srgrimes * Set up the unpriviledged user. 17231558Srgrimes */ 17241558Srgrimes cr->cr_ref = 1; 17251558Srgrimes cr->cr_uid = -2; 17261558Srgrimes cr->cr_groups[0] = -2; 17271558Srgrimes cr->cr_ngroups = 1; 17281558Srgrimes /* 17291558Srgrimes * Get the user's password table entry. 17301558Srgrimes */ 17311558Srgrimes names = strsep(&namelist, " \t\n"); 17321558Srgrimes name = strsep(&names, ":"); 17331558Srgrimes if (isdigit(*name) || *name == '-') 17341558Srgrimes pw = getpwuid(atoi(name)); 17351558Srgrimes else 17361558Srgrimes pw = getpwnam(name); 17371558Srgrimes /* 17381558Srgrimes * Credentials specified as those of a user. 17391558Srgrimes */ 17401558Srgrimes if (names == NULL) { 17411558Srgrimes if (pw == NULL) { 17421558Srgrimes syslog(LOG_ERR, "Unknown user: %s", name); 17431558Srgrimes return; 17441558Srgrimes } 17451558Srgrimes cr->cr_uid = pw->pw_uid; 17461558Srgrimes ngroups = NGROUPS + 1; 17471558Srgrimes if (getgrouplist(pw->pw_name, pw->pw_gid, groups, &ngroups)) 17481558Srgrimes syslog(LOG_ERR, "Too many groups"); 17491558Srgrimes /* 17501558Srgrimes * Convert from int's to gid_t's and compress out duplicate 17511558Srgrimes */ 17521558Srgrimes cr->cr_ngroups = ngroups - 1; 17531558Srgrimes cr->cr_groups[0] = groups[0]; 17541558Srgrimes for (cnt = 2; cnt < ngroups; cnt++) 17551558Srgrimes cr->cr_groups[cnt - 1] = groups[cnt]; 17561558Srgrimes return; 17571558Srgrimes } 17581558Srgrimes /* 17591558Srgrimes * Explicit credential specified as a colon separated list: 17601558Srgrimes * uid:gid:gid:... 17611558Srgrimes */ 17621558Srgrimes if (pw != NULL) 17631558Srgrimes cr->cr_uid = pw->pw_uid; 17641558Srgrimes else if (isdigit(*name) || *name == '-') 17651558Srgrimes cr->cr_uid = atoi(name); 17661558Srgrimes else { 17671558Srgrimes syslog(LOG_ERR, "Unknown user: %s", name); 17681558Srgrimes return; 17691558Srgrimes } 17701558Srgrimes cr->cr_ngroups = 0; 17711558Srgrimes while (names != NULL && *names != '\0' && cr->cr_ngroups < NGROUPS) { 17721558Srgrimes name = strsep(&names, ":"); 17731558Srgrimes if (isdigit(*name) || *name == '-') { 17741558Srgrimes cr->cr_groups[cr->cr_ngroups++] = atoi(name); 17751558Srgrimes } else { 17761558Srgrimes if ((gr = getgrnam(name)) == NULL) { 17771558Srgrimes syslog(LOG_ERR, "Unknown group: %s", name); 17781558Srgrimes continue; 17791558Srgrimes } 17801558Srgrimes cr->cr_groups[cr->cr_ngroups++] = gr->gr_gid; 17811558Srgrimes } 17821558Srgrimes } 17831558Srgrimes if (names != NULL && *names != '\0' && cr->cr_ngroups == NGROUPS) 17841558Srgrimes syslog(LOG_ERR, "Too many groups"); 17851558Srgrimes} 17861558Srgrimes 17871558Srgrimes#define STRSIZ (RPCMNT_NAMELEN+RPCMNT_PATHLEN+50) 17881558Srgrimes/* 17891558Srgrimes * Routines that maintain the remote mounttab 17901558Srgrimes */ 17911558Srgrimesvoid 17921558Srgrimesget_mountlist() 17931558Srgrimes{ 17941558Srgrimes struct mountlist *mlp, **mlpp; 17951558Srgrimes char *eos, *dirp; 17961558Srgrimes int len; 17971558Srgrimes char str[STRSIZ]; 17981558Srgrimes FILE *mlfile; 17991558Srgrimes 18001558Srgrimes if ((mlfile = fopen(_PATH_RMOUNTLIST, "r")) == NULL) { 18011558Srgrimes syslog(LOG_ERR, "Can't open %s", _PATH_RMOUNTLIST); 18021558Srgrimes return; 18031558Srgrimes } 18041558Srgrimes mlpp = &mlhead; 18051558Srgrimes while (fgets(str, STRSIZ, mlfile) != NULL) { 18061558Srgrimes if ((dirp = index(str, '\t')) == NULL && 18071558Srgrimes (dirp = index(str, ' ')) == NULL) 18081558Srgrimes continue; 18091558Srgrimes mlp = (struct mountlist *)malloc(sizeof (*mlp)); 18101558Srgrimes len = dirp-str; 18111558Srgrimes if (len > RPCMNT_NAMELEN) 18121558Srgrimes len = RPCMNT_NAMELEN; 18131558Srgrimes bcopy(str, mlp->ml_host, len); 18141558Srgrimes mlp->ml_host[len] = '\0'; 18151558Srgrimes while (*dirp == '\t' || *dirp == ' ') 18161558Srgrimes dirp++; 18171558Srgrimes if ((eos = index(dirp, '\t')) == NULL && 18181558Srgrimes (eos = index(dirp, ' ')) == NULL && 18191558Srgrimes (eos = index(dirp, '\n')) == NULL) 18201558Srgrimes len = strlen(dirp); 18211558Srgrimes else 18221558Srgrimes len = eos-dirp; 18231558Srgrimes if (len > RPCMNT_PATHLEN) 18241558Srgrimes len = RPCMNT_PATHLEN; 18251558Srgrimes bcopy(dirp, mlp->ml_dirp, len); 18261558Srgrimes mlp->ml_dirp[len] = '\0'; 18271558Srgrimes mlp->ml_next = (struct mountlist *)NULL; 18281558Srgrimes *mlpp = mlp; 18291558Srgrimes mlpp = &mlp->ml_next; 18301558Srgrimes } 18311558Srgrimes fclose(mlfile); 18321558Srgrimes} 18331558Srgrimes 18341558Srgrimesvoid 18351558Srgrimesdel_mlist(hostp, dirp) 18361558Srgrimes char *hostp, *dirp; 18371558Srgrimes{ 18381558Srgrimes struct mountlist *mlp, **mlpp; 18391558Srgrimes struct mountlist *mlp2; 18401558Srgrimes FILE *mlfile; 18411558Srgrimes int fnd = 0; 18421558Srgrimes 18431558Srgrimes mlpp = &mlhead; 18441558Srgrimes mlp = mlhead; 18451558Srgrimes while (mlp) { 18461558Srgrimes if (!strcmp(mlp->ml_host, hostp) && 18471558Srgrimes (!dirp || !strcmp(mlp->ml_dirp, dirp))) { 18481558Srgrimes fnd = 1; 18491558Srgrimes mlp2 = mlp; 18501558Srgrimes *mlpp = mlp = mlp->ml_next; 18511558Srgrimes free((caddr_t)mlp2); 18521558Srgrimes } else { 18531558Srgrimes mlpp = &mlp->ml_next; 18541558Srgrimes mlp = mlp->ml_next; 18551558Srgrimes } 18561558Srgrimes } 18571558Srgrimes if (fnd) { 18581558Srgrimes if ((mlfile = fopen(_PATH_RMOUNTLIST, "w")) == NULL) { 18591558Srgrimes syslog(LOG_ERR,"Can't update %s", _PATH_RMOUNTLIST); 18601558Srgrimes return; 18611558Srgrimes } 18621558Srgrimes mlp = mlhead; 18631558Srgrimes while (mlp) { 18641558Srgrimes fprintf(mlfile, "%s %s\n", mlp->ml_host, mlp->ml_dirp); 18651558Srgrimes mlp = mlp->ml_next; 18661558Srgrimes } 18671558Srgrimes fclose(mlfile); 18681558Srgrimes } 18691558Srgrimes} 18701558Srgrimes 18711558Srgrimesvoid 18721558Srgrimesadd_mlist(hostp, dirp) 18731558Srgrimes char *hostp, *dirp; 18741558Srgrimes{ 18751558Srgrimes struct mountlist *mlp, **mlpp; 18761558Srgrimes FILE *mlfile; 18771558Srgrimes 18781558Srgrimes mlpp = &mlhead; 18791558Srgrimes mlp = mlhead; 18801558Srgrimes while (mlp) { 18811558Srgrimes if (!strcmp(mlp->ml_host, hostp) && !strcmp(mlp->ml_dirp, dirp)) 18821558Srgrimes return; 18831558Srgrimes mlpp = &mlp->ml_next; 18841558Srgrimes mlp = mlp->ml_next; 18851558Srgrimes } 18861558Srgrimes mlp = (struct mountlist *)malloc(sizeof (*mlp)); 18871558Srgrimes strncpy(mlp->ml_host, hostp, RPCMNT_NAMELEN); 18881558Srgrimes mlp->ml_host[RPCMNT_NAMELEN] = '\0'; 18891558Srgrimes strncpy(mlp->ml_dirp, dirp, RPCMNT_PATHLEN); 18901558Srgrimes mlp->ml_dirp[RPCMNT_PATHLEN] = '\0'; 18911558Srgrimes mlp->ml_next = (struct mountlist *)NULL; 18921558Srgrimes *mlpp = mlp; 18931558Srgrimes if ((mlfile = fopen(_PATH_RMOUNTLIST, "a")) == NULL) { 18941558Srgrimes syslog(LOG_ERR, "Can't update %s", _PATH_RMOUNTLIST); 18951558Srgrimes return; 18961558Srgrimes } 18971558Srgrimes fprintf(mlfile, "%s %s\n", mlp->ml_host, mlp->ml_dirp); 18981558Srgrimes fclose(mlfile); 18991558Srgrimes} 19001558Srgrimes 19011558Srgrimes/* 19021558Srgrimes * This function is called via. SIGTERM when the system is going down. 19031558Srgrimes * It sends a broadcast RPCMNT_UMNTALL. 19041558Srgrimes */ 19051558Srgrimesvoid 19061558Srgrimessend_umntall() 19071558Srgrimes{ 19081558Srgrimes (void) clnt_broadcast(RPCPROG_MNT, RPCMNT_VER1, RPCMNT_UMNTALL, 19091558Srgrimes xdr_void, (caddr_t)0, xdr_void, (caddr_t)0, umntall_each); 19101558Srgrimes exit(0); 19111558Srgrimes} 19121558Srgrimes 19131558Srgrimesint 19141558Srgrimesumntall_each(resultsp, raddr) 19151558Srgrimes caddr_t resultsp; 19161558Srgrimes struct sockaddr_in *raddr; 19171558Srgrimes{ 19181558Srgrimes return (1); 19191558Srgrimes} 19201558Srgrimes 19211558Srgrimes/* 19221558Srgrimes * Free up a group list. 19231558Srgrimes */ 19241558Srgrimesvoid 19251558Srgrimesfree_grp(grp) 19261558Srgrimes struct grouplist *grp; 19271558Srgrimes{ 19281558Srgrimes char **addrp; 19291558Srgrimes 19301558Srgrimes if (grp->gr_type == GT_HOST) { 19311558Srgrimes if (grp->gr_ptr.gt_hostent->h_name) { 19321558Srgrimes addrp = grp->gr_ptr.gt_hostent->h_addr_list; 19331558Srgrimes while (addrp && *addrp) 19341558Srgrimes free(*addrp++); 19351558Srgrimes free((caddr_t)grp->gr_ptr.gt_hostent->h_addr_list); 19361558Srgrimes free(grp->gr_ptr.gt_hostent->h_name); 19371558Srgrimes } 19381558Srgrimes free((caddr_t)grp->gr_ptr.gt_hostent); 19391558Srgrimes } else if (grp->gr_type == GT_NET) { 19401558Srgrimes if (grp->gr_ptr.gt_net.nt_name) 19411558Srgrimes free(grp->gr_ptr.gt_net.nt_name); 19421558Srgrimes } 19431558Srgrimes#ifdef ISO 19441558Srgrimes else if (grp->gr_type == GT_ISO) 19451558Srgrimes free((caddr_t)grp->gr_ptr.gt_isoaddr); 19461558Srgrimes#endif 19471558Srgrimes free((caddr_t)grp); 19481558Srgrimes} 19491558Srgrimes 19501558Srgrimes#ifdef DEBUG 19511558Srgrimesvoid 19521558SrgrimesSYSLOG(int pri, const char *fmt, ...) 19531558Srgrimes{ 19541558Srgrimes va_list ap; 19551558Srgrimes 19561558Srgrimes va_start(ap, fmt); 19571558Srgrimes vfprintf(stderr, fmt, ap); 19581558Srgrimes va_end(ap); 19591558Srgrimes} 19601558Srgrimes#endif /* DEBUG */ 19611558Srgrimes 19621558Srgrimes/* 19631558Srgrimes * Check options for consistency. 19641558Srgrimes */ 19651558Srgrimesint 19661558Srgrimescheck_options(dp) 19671558Srgrimes struct dirlist *dp; 19681558Srgrimes{ 19691558Srgrimes 19701558Srgrimes if (dp == (struct dirlist *)NULL) 19711558Srgrimes return (1); 19721558Srgrimes if ((opt_flags & (OP_MAPROOT | OP_MAPALL)) == (OP_MAPROOT | OP_MAPALL) || 19731558Srgrimes (opt_flags & (OP_MAPROOT | OP_KERB)) == (OP_MAPROOT | OP_KERB) || 19741558Srgrimes (opt_flags & (OP_MAPALL | OP_KERB)) == (OP_MAPALL | OP_KERB)) { 19751558Srgrimes syslog(LOG_ERR, "-mapall, -maproot and -kerb mutually exclusive"); 19761558Srgrimes return (1); 19771558Srgrimes } 19781558Srgrimes if ((opt_flags & OP_MASK) && (opt_flags & OP_NET) == 0) { 19791558Srgrimes syslog(LOG_ERR, "-mask requires -net"); 19801558Srgrimes return (1); 19811558Srgrimes } 19821558Srgrimes if ((opt_flags & (OP_NET | OP_ISO)) == (OP_NET | OP_ISO)) { 19831558Srgrimes syslog(LOG_ERR, "-net and -iso mutually exclusive"); 19841558Srgrimes return (1); 19851558Srgrimes } 19861558Srgrimes if ((opt_flags & OP_ALLDIRS) && dp->dp_left) { 19871558Srgrimes syslog(LOG_ERR, "-alldir has multiple directories"); 19881558Srgrimes return (1); 19891558Srgrimes } 19901558Srgrimes return (0); 19911558Srgrimes} 19921558Srgrimes 19931558Srgrimes/* 19941558Srgrimes * Check an absolute directory path for any symbolic links. Return true 19951558Srgrimes * if no symbolic links are found. 19961558Srgrimes */ 19971558Srgrimesint 19981558Srgrimescheck_dirpath(dirp) 19991558Srgrimes char *dirp; 20001558Srgrimes{ 20011558Srgrimes char *cp; 20021558Srgrimes int ret = 1; 20031558Srgrimes struct stat sb; 20041558Srgrimes 20051558Srgrimes cp = dirp + 1; 20061558Srgrimes while (*cp && ret) { 20071558Srgrimes if (*cp == '/') { 20081558Srgrimes *cp = '\0'; 20091558Srgrimes if (lstat(dirp, &sb) < 0 || 20101558Srgrimes (sb.st_mode & S_IFMT) != S_IFDIR) 20111558Srgrimes ret = 0; 20121558Srgrimes *cp = '/'; 20131558Srgrimes } 20141558Srgrimes cp++; 20151558Srgrimes } 20161558Srgrimes if (lstat(dirp, &sb) < 0 || 20171558Srgrimes (sb.st_mode & S_IFMT) != S_IFDIR) 20181558Srgrimes ret = 0; 20191558Srgrimes return (ret); 20201558Srgrimes} 2021